AD1843 查看數據表（PDF） - Analog Devices
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AD1843 Datasheet PDF : 64 Pages
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AD1843–SPECIFICATIONS
STANDARD TEST CONDITIONS UNLESS OTHERWISE NOTED
Temperature
25
°C
DAC Conditions
Digital Supply (VDD)
Analog Supply (VCC)
Sample Rate (FS)
Input Signal
5.0
5.0
48
1008
V
Autocalibrated
V
0 dB Attenuation
kHz
0 dB Relative to Full Scale
Hz
16-Bit Linear Mode
Analog Output Passband 20 Hz to 20 kHz
No Output Load
ADC FFT Size
2048
Mute Off
DAC FFT Size
8192
DAC1 Single-Ended
VIH
2.0
V
DAC2 Differential
VIL
0.8
V
VOH
2.4
V
VOL
0.4
V
IOH
–2
mA
IOL
2
mA
ADC Input Conditions
Mic 20 dB Gain Disabled
LIN Single-Ended
(LINLSD & LINRSD = 0)
Autocalibrated
0 dB PGA Gain
–1.0 dB Relative to Full Scale
Line Input
16-Bit Linear Mode
ANALOG INPUT
Min
Typ
Max
Units
Full-Scale Input Voltage (RMS Values Assume Sine Wave Input)
All Inputs with ADRFLT & ADLFLT = 0 and LINLSD & LINRSD = 0
(LINLP, LINRP, AUX1L, AUX1R, AUX2L,
2.55
AUX2R, AUX3L, AUX3R, MIN)
All Inputs with ADRFLT & ADLFLT = 0 and LINLSD & LINRSD = 1
(LINLP & LINLN, LINRP & LINRN)
5.1
All Inputs with ADRFLT & ADLFLT = 1 and LINLSD & LINRSD = 0
(LINLP, LINRP, AUX1L, AUX1R, AUX2L, AUX2R, AUX3L,
2.8
AUX3R, MIN)
All Inputs with ADRFLT & ADLFLT = 1 and LINLSD & LINRSD = 1
(LINLP & LINLN, LINRP & LINRN)
5.6
MIC with +20 dB Gain (LMGE & RMGE = 1
and ADRFLT & ADLFLT = 0)
(MICL, MICR)
0.25
MIC with 0 dB Gain (LMGE & RMGE = 0
and ADRFLT & ADLFLT = 0)
(MICL, MICR)
2.55
AUX, SUM and MIN Input Impedance*
10K
(AUX1L, AUX1R, AUX2L, AUX2R, AUX3L, AUX3R, SUML,
SUMR, MIN)
LIN Input Impedance* (LINLP, LINLN, LINRP, LINRN)
40K
MIC Input Impedance* (MICL, MICR)
20K
Input Capacitance* (All Inputs)
1
2.828
3.1
2
5.656
6.2
1.127
3.156
3.5
2.254
6.312
7.0
0.1
0.2828
0.31
1
2.828
3.1
15
V rms
V p-p
V rms
V p-p
V rms
V p-p
V rms
V p-p
V rms
V p-p
V rms
V p-p
Ω
Ω
Ω
pF
PROGRAMMABLE GAIN AMPLIFIER–ADC
Min
Typ
Max
Units
Step Size (0 dB to 22.5 dB) (All Steps Tested)
PGA Gain Range Span*
1.3
1.5
1.7
dB
21.5
22.5
23.5
dB
INPUT (AUX1, AUX2, AUX3, MIN, MIC)
ANALOG AMPLIFIERS/ATTENUATORS
Min
Typ
Max
Units
Step Size (+12.0 dB to –30 dB) (All Steps Tested)
Step Size (–31.5 dB to –34.5 dB) (All Steps Tested)
Input Gain/Attenuation Range*
Mute Attenuation*
1.25
1.5
1.75
dB
1.1
1.5
1.9
dB
45.5
46.5
47.5
dB
–80.0
dB
–2–
REV. 0
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